Self-tightening bush for mill-spindles



H. FLINCHBAUGH. Tightening Bush. fora Mills.

Patented 0t. 19', 1838.

UNITED STATES PATENT OFFICE.

HENRY FLINCHB AUGH, OF LAMPETER TO'WNSHIP, PENNSYLVANIA;

SELF-TIGHTENING BUSH FOR MILL-SPINDLES.

Specification of Letters Patent No. 984, dated October 19, 1838.

T0 all whom it may concern Be it known thatI, HENRY FLINCHBAUGH, ofLampeter. township, in the county of Lancaster and State ofPennsylvania, miller, have invented a new and useful Improvement inGrist or Flour Mills, called a Selfto the grooves mentioned in the bush.When these followers are put in their place around the spindle (K) andthe customary piece of stout leather is inserted between the followersand spindle the top of the followers and bush will be in the same planeand form, a nearly even surface. There is still, however,

an opening between the two followers which suffer them to tighten on thespindle as they sink downward. On the lower end of each of thesefollowers is a projection eX- tending some distance below the followers.In these are two iron links which connect with a forked lever (C) (Fig.6). This lever has near its middle, two projections, or props, (D) whichrest upon the bottom of the bed stone; and at its extremity is a cord(E), passing through a pulley. To the end of this cord a weight or poweris attached; bythis means the followers areal ways kept down to thespindle; and by means of the tapering grooves they are tightened to thespindle. In this bush are four holes, at equal distances, through whichbolts are let which screw it fast to a plate beneath the bed stone.There are four other holes in the bush into which wooden plugs aredriven for the purpose of nailing upon the bush a sheet iron covering,(G) which prevents all manner of dirt from entering between the spindleand followers. A. sheet iron plate (H) of lesser diameter 'with a squarehole in the center to fit on the square end of the spindle, servesfurther to exclude all dirt. And for the purpose of keeping the spindlesufliciently oiled, at all times, a small tube (I) is made of tin orcopper which, after passing down through the husk and under the bedstone, comes up through the bush, through an opening made for thatpurpose and communicates with the spindle and followers, as at (L). Themouth of this tube extends a short distance above the husk, so as togive suflicient head to force the oil from the mouth to the spindle.

What I claim as my invention and desire to secure by Letters Patent isThe combination of the bush and followers constructed and acting asherein de scribed, and also the within. described methodv of conveyingthe oil to the spindle.

HENRY FLINCHBAUGH.

Witnesses:

SAML. DALE, JAMES J. DALE,

